I'm assuming they burned through much of the initial battery charge trying to establish contact, determine orientation, right the lander, etc. So it may have be

I'm assuming they burned through much of the initial battery charge trying to establish contact, determine orientation, right the lander, etc. So it may have been able to operate for a week had they not had to do a lot of things they hadn't planned on. Yes, they want to give things a positive spin, but they aren't being disingenuous. They have learned a lot from this, and they got to run tests with all of the equipment on the lander. Calling it a major failure is way off base. You often learn more from things going wrong than from when they go right. Maybe not the things you were planning on learning, but this is very far from a failure. I also think you're over-interpreting their "minimum mission target". That was an "if everything goes to plan" target. Everything didn't go as planned, but here's the thing: that's also in the plan. It is not possible to do this kind of mission without things going wrong. Usually when things go wrong, you get no data back. But despite the landing going terribly awry, we still got a lot of data back! If you consider this a failure or a disappointment, then I'm glad you don't work for the ESA. You are far too cynical to be able to get this kind of science done.